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Pore-Scale Study of Fluid Displacement in Parallel-Layered Porous Media and Implications of Associated Distinct Flow Dynamics.
Langmuir
January 2025
School of Energy and Power Engineering, Shandong University, Jinan 250061, China.
Fluid displacement within layered porous media is more complex than in nonlayered ones. Most of the previous studies placed a focus on the porous media with layerings perpendicular to the flow direction, and the effects of pore topology were often ignored. Therefore, this study aims to reveal the flow physics in porous media with layering parallel to the flow direction by accounting for the specific pore topology.
View Article and Find Full Text PDFBio-inspired carbon-based artificial muscle with precise and continuous morphing capabilities.
Natl Sci Rev
January 2025
CAS Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
In the face of advancements in microrobotics, intelligent control and precision medicine, artificial muscle actuation systems must meet demands for precise control, high stability, environmental adaptability and high integration miniaturization. Carbon materials, being lightweight, strong and highly conductive and flexible, show great potential for artificial muscles. Inspired by the butterfly's proboscis, we have developed a carbon-based artificial muscle, hydrogen-substituted graphdiyne muscle (HsGDY-M), fabricated efficiently using an emerging hydrogen-substituted graphdiyne (HsGDY) film with an asymmetrical surface structure.
View Article and Find Full Text PDFLipoma in thenar and hypothenar eminence of the hand, a rare presentation; case report.
Int J Surg Case Rep
January 2025
Department of Surgery, School of medicine, Debre Markos University, 269, Ethiopia.
Introduction: Lipomas are benign tumors primarily composed of adipose tissue, typically found in subcutaneous or intramuscular sites across the body. While lipomas in the hand are uncommon, their occurrence in both thenar and hypothenar eminences is exceedingly rare.
Case Presentation: In this case, 65-year-old female admitted to hospital with a ten-year history of progressive swelling in the palmar aspect of her right hand, resulting in limited finger movement.
Validity and normative scores of finger flexor strength and endurance tests estimated from a large sample of female and male climbers.
J Sports Sci
January 2025
Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic.
Recent reviews have highlighted conflicting findings regarding the validity of finger flexor strength and endurance tests in sport climbers, often due to small sample sizes and low ecological validity of the tests used. To address these gaps, 185 male and 122 female climbers underwent maximal finger flexor strength, intermittent and continuous finger flexor endurance, and the finger hang tests in a sport-specific setting to determine the predictive and concurrent validity of these tests. The finger hang test showed the strongest relationship to climbing ability for both sexes ( ≈ 0.
View Article and Find Full Text PDFManagement of mucogingival defect following excision of multiple gingival squamous cell papillomas using VISTA - A case report with 24 months follow-up.
J Indian Soc Periodontol
December 2024
VISTA Institute for Therapeutic Innovations, California, USA.
Oral squamous cell papilloma is a benign proliferation of the stratified squamous epithelium, associated with the human papillomavirus (HPV). The clinical manifestation includes papillary or verrucous exophytic mass. Complete excision of the lesion, including normal margins, followed by histopathological examination is the treatment of choice.
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